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Quasi-orthogonality of the best approximant sets |
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| Authors: | H Mazaheri FM Maalek Ghaini |
| Institution: | Faculty of Mathematics, Yazd University, Yazd, Iran |
| Abstract: | A concept of orthogonality on the normed linear space was introduced by Birkhoff. We shall define the quasi-orthogonal sets in best approximant sets and also some results on best approximation will be obtained. |
| Keywords: | 46B20 41A50 35E10 |
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